test/CodeGen/MIR/X86/successor-basic-blocks-weights.mir

# RUN: llc -march=x86-64 -start-after branch-folder -stop-after branch-folder -o /dev/null %s | FileCheck %s
# This test ensures that the MIR parser parses basic block successors and
# probabilities correctly.

--- |

  define i32 @foo(i32 %a) {
  entry:
    %0 = icmp sle i32 %a, 10
    br i1 %0, label %less, label %exit

  less:
    ret i32 0

  exit:
    ret i32 %a
  }

...
---
name:            foo
body: |
  ; CHECK-LABEL: bb.0.entry:
  ; CHECK:         successors: %bb.1.less({{[0-9a-fx/= ]+}}33.00%), %bb.2.exit({{[0-9a-fx/= ]+}}67.00%)
  ; CHECK-LABEL: bb.1.less:
  bb.0.entry:
    successors: %bb.1.less (33), %bb.2.exit(67)
    liveins: %edi

    CMP32ri8 %edi, 10, implicit-def %eflags
    JG_1 %bb.2.exit, implicit killed %eflags

  bb.1.less:
    %eax = MOV32r0 implicit-def dead %eflags
    RETQ killed %eax

  bb.2.exit:
    liveins: %edi

    %eax = COPY killed %edi
    RETQ killed %eax
...